I rewatched The Fellowship of the Ring a few days ago and something struck me as odd. When the Fellowship was on the mountain after being buried by the avalanche Gimli was adamant that the Fellowship go through the Mines of Moria, but the mines were occupied by the Balrog and had been so for a few centuries at least. I thought this was well known by everyone. Also he said that his cousin Balin would give them a royal welcome, but no one had heard from Balin for several years after he had left to retake Moria. Doesn't it seem odd that Gimli had no knowledge, or forgot about, Durin's Bane or that he would assume everything was peachy in Moria when he had no evidence to suggest it was? Also why didn't Gandalf mention anything about the Balrog when he asked Frodo to decide what route to take? Seems like an important piece of information to keep to himself.